Why should we plant trees?

why should we plant more trees? Why should people plant trees?的回答 Why should we plant more trees 回答,用英语啊,我初三啊,谢谢哈 Why should we protect trees why don't we go to plant trees this weekend we should plant more trees ,and..then the When should we plant the trees They (〉in spring. We should plant more trees to make the air_____.(clean) we plant trees every We should plant more trees and flowers around us . We should every year we plant -------- trees We are going to plant trees this Sunday.Why not go with us ?